U0060: Open Circuit in Vehicle Bus D
The U0060 code indicates that a control module has detected an open circuit in the vehicle's 'D' communication bus. This means there is an electrical discontinuity in the data line (CAN High, CAN Low, or another manufacturer-specific protocol for Bus D), preventing message transmission between modules connected to that bus.
1. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.
2. Most Common Causes
- Open circuit in Bus D wiring (CAN High, CAN Low, or single-wire line)
- Damaged, loose, or corroded connector terminals on a Bus D module
- Damaged or missing Bus D termination resistor
- Internal failure of the CAN transceiver in a module connected to Bus D
- Short to battery or ground forcing the bus into a permanent dominant/recessive state, simulating an open circuit
3. Symptoms You Will Notice
- Check Engine Light or other warning lights illuminated
- Multiple electronic systems malfunctioning or inoperative
4. Step-by-Step Diagnosis
Scan all modules for communication faults and document U0060 and related codes
Visually inspect Bus D wiring and connectors for damage, corrosion, or looseness
Measure resistance across the Bus D termination resistors (typically 60 ohms on a CAN bus)
Check for shorts to power or ground on the Bus D lines using a multimeter
Isolate modules one by one to identify which module is causing the bus fault
5. Frequently Asked Questions
Is it safe to drive?▼
No, driving with this code is not recommended as it can cause multiple critical systems to fail, potentially leading to a loss of vehicle control or safety features.
How much does it cost to fix?▼
Repair costs typically range from $150 to $600, depending on the root cause (e.g., wiring repair vs. module replacement) and labor rates.